public ValueTask EndSessionAsync(BlackjackSession session)
{
if (session == null)
{
throw new BlackjackSessionNullException();
}
return(repository.DeleteAsync(session.GetContext()));
}
public BlackjackState Stand(BlackjackSession session, ulong playerId)
{
if (!session.Players.TryGetValue(playerId, out var currentPlayer))
{
throw new InvalidOperationException();
}
if (!session.Players.TryGetValue(DealerId, out var dealer))
{
throw new InvalidOperationException();
}
while (true)
{
if (session.GetHandWorth(dealer) >= Math.Max(session.GetHandWorth(currentPlayer), 17))
{
if (currentPlayer.Hand.Count >= 5)
{
if (dealer.Hand.Count == 5)
{
if (session.GetHandWorth(dealer) == session.GetHandWorth(currentPlayer))
{
return(BlackjackState.DRAW);
}
if (session.GetHandWorth(dealer) > session.GetHandWorth(currentPlayer))
{
return(BlackjackState.LOSE);
}
return(BlackjackState.WIN);
}
}
else
{
if (session.GetHandWorth(dealer) == session.GetHandWorth(currentPlayer))
{
return(BlackjackState.DRAW);
}
return(BlackjackState.LOSE);
}
}
DrawCard(session, DealerId);
if (session.GetHandWorth(dealer) > 21)
{
return(BlackjackState.WIN);
}
}
}
public BlackjackState DrawCard(BlackjackSession session, ulong playerId)
{
if (!session.Players.TryGetValue(playerId, out var currentPlayer))
{
throw new InvalidOperationException();
}
currentPlayer.AddToHand(session.Deck.DrawRandom());
if (session.GetHandWorth(currentPlayer) > 21)
{
// TODO: write test that makes player fail.
return(BlackjackState.LOSE);
}
return(BlackjackState.NONE);
}
